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obs-streamFX
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cmake: Split optimizations by platform and compiler 

Also make fast math optional on all platforms and compilers.
This commit is contained in:
Michael Fabian 'Xaymar' Dirks 2022-06-02 08:55:40 +02:00
parent a5b20c85b0
commit afdddd9381
1 changed files with 75 additions and 21 deletions
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96
CMakeLists.txt
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@ -34,7 +34,7 @@ if("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_LIST_DIR}")
set(PREFIX "") set(PREFIX "")
else() else()
set(GROUPED ON) set(GROUPED ON)
set(PREFIX "StreamFX_") set(PREFIX "StreamFX_")
if(GROUPED AND (TARGET libobs)) if(GROUPED AND (TARGET libobs))
set(STANDALONE OFF) set(STANDALONE OFF)
endif() endif()
@ -316,6 +316,7 @@ set(${PREFIX}ENABLE_PROFILING OFF CACHE BOOL "Enable CPU and GPU performance tra
## Compile/Link Related ## Compile/Link Related
set(${PREFIX}ENABLE_LTO ${D_HAS_IPO} CACHE BOOL "Enable Link Time Optimization for faster and smaller binaries.") set(${PREFIX}ENABLE_LTO ${D_HAS_IPO} CACHE BOOL "Enable Link Time Optimization for faster and smaller binaries.")
set(${PREFIX}ENABLE_FASTMATH ON CACHE BOOL "Enable fast math optimizations, which sacrifice precision and stability.")
if(D_PLATFORM_ARCH_X86) if(D_PLATFORM_ARCH_X86)
set(${PREFIX}TARGET_X86_64_V4 OFF CACHE BOOL "Target x86-64-v4 (x86-64-v3, AVX512F, AVX512BW, AVX512CD, AVX512DQ, AVX512VL).") set(${PREFIX}TARGET_X86_64_V4 OFF CACHE BOOL "Target x86-64-v4 (x86-64-v3, AVX512F, AVX512BW, AVX512CD, AVX512DQ, AVX512VL).")
set(${PREFIX}TARGET_X86_64_V3 OFF CACHE BOOL "Target x86-64-v3 (x86-64-v2, AVX, AVX2, BMI1, BMI2, F16C, FMA, LZCNT, MOVBE, OSXSAVE).") set(${PREFIX}TARGET_X86_64_V3 OFF CACHE BOOL "Target x86-64-v3 (x86-64-v2, AVX, AVX2, BMI1, BMI2, F16C, FMA, LZCNT, MOVBE, OSXSAVE).")
@ -1971,7 +1972,7 @@ if(${PREFIX}ENABLE_LTO)
endif() endif()
# C/C++ Compiler Adjustments # C/C++ Compiler Adjustments
if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR (WIN32 AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")) if(D_PLATFORM_WINDOWS AND ((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")))
# MSVC/ClangCL # MSVC/ClangCL
message(STATUS "${LOGPREFIX} Applying custom flags for MSVC style build.") message(STATUS "${LOGPREFIX} Applying custom flags for MSVC style build.")
@ -1994,7 +1995,7 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR (WIN32 AND CMAKE_CXX_COMPILER_ID STR
foreach(WARN ${DISABLED_WARNINGS}) foreach(WARN ${DISABLED_WARNINGS})
target_compile_options(${PROJECT_NAME} PRIVATE "${WARN}") target_compile_options(${PROJECT_NAME} PRIVATE "${WARN}")
endforeach() endforeach()
# - Require enabled instruction sets. # - Require enabled instruction sets.
if(D_PLATFORM_ARCH_X86) if(D_PLATFORM_ARCH_X86)
if(${PREFIX}TARGET_X86_64_V4) if(${PREFIX}TARGET_X86_64_V4)
@ -2014,7 +2015,18 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR (WIN32 AND CMAKE_CXX_COMPILER_ID STR
message(STATUS "${LOGPREFIX} Targeting x86-64.") message(STATUS "${LOGPREFIX} Targeting x86-64.")
endif() endif()
endif() endif()
# - Use fast unordered math if possible.
if(${PREFIX}ENABLE_FASTMATH)
target_compile_options(${PROJECT_NAME} PRIVATE "/fp:fast")
else()
target_compile_options(${PROJECT_NAME} PRIVATE "/fp:precise")
if(MSVC_VERSION GREATER 1930)
# Keep original behavior in VS2022 and up.
target_compile_options(${PROJECT_NAME} PRIVATE "/fp:contract")
endif()
endif()
# - Disable incremental builds # - Disable incremental builds
target_compile_options(${PROJECT_NAME} PRIVATE "/INCREMENTAL:NO") target_compile_options(${PROJECT_NAME} PRIVATE "/INCREMENTAL:NO")
@ -2026,10 +2038,9 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR (WIN32 AND CMAKE_CXX_COMPILER_ID STR
# - Enable updated __cplusplus macro # - Enable updated __cplusplus macro
target_compile_options(${PROJECT_NAME} PRIVATE "/Zc:__cplusplus") target_compile_options(${PROJECT_NAME} PRIVATE "/Zc:__cplusplus")
# - Generic Optimizations for Release/RelWithDebInfo/MinSizeRel # - Generic Optimizations for Release/RelWithDebInfo/MinSizeRel
set(FLAGS set(FLAGS
"/fp:fast"
"/OPT:REF" "/OPT:REF"
"/OPT:ICF=3" "/OPT:ICF=3"
"/GL" "/GL"
@ -2041,38 +2052,34 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR (WIN32 AND CMAKE_CXX_COMPILER_ID STR
foreach(FLAG ${FLAGS}) foreach(FLAG ${FLAGS})
target_compile_options(${PROJECT_NAME} PRIVATE "$<$<CONFIG:Release,RelWithDebInfo,MinSizeRel>:${FLAG}>") target_compile_options(${PROJECT_NAME} PRIVATE "$<$<CONFIG:Release,RelWithDebInfo,MinSizeRel>:${FLAG}>")
endforeach() endforeach()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU") elseif(D_PLATFORM_LINUX AND ((CMAKE_CXX_COMPILER_ID STREQUAL "Clang") OR (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")))
# Clang/AppleClang/GNU # GCC/Clang
message(STATUS "${LOGPREFIX} Applying custom flags for GNU style build.") message(STATUS "${LOGPREFIX} Applying custom flags for GCC/Clang style build.")
# - Enable most useful warnings. # - Enable most useful warnings.
target_compile_options(${PROJECT_NAME} PRIVATE "-Wall") target_compile_options(${PROJECT_NAME} PRIVATE "-Wall")
target_compile_options(${PROJECT_NAME} PRIVATE "-Wextra") target_compile_options(${PROJECT_NAME} PRIVATE "-Wextra")
# - Require enabled instruction sets. # - Require enabled instruction sets.
if(${PREFIX}TARGET_NATIVE) if(${PREFIX}TARGET_NATIVE)
target_compile_options(${PROJECT_NAME} PRIVATE target_compile_options(${PROJECT_NAME} PRIVATE
"-march=native" "-march=native"
"-mtune=native"
) )
message(WARNING "${LOGPREFIX} Targeting native architecture. Binaries will not be distributable to other systems!") message(WARNING "${LOGPREFIX} Targeting native architecture. Binaries will not be distributable to other systems!")
elseif(D_PLATFORM_ARCH_X86) elseif(D_PLATFORM_ARCH_X86)
if(${PREFIX}TARGET_X86_64_V4) if(${PREFIX}TARGET_X86_64_V4)
target_compile_options(${PROJECT_NAME} PRIVATE target_compile_options(${PROJECT_NAME} PRIVATE
"-march=x86-64-v4" "-march=x86-64-v4"
"-mtune=generic"
) )
message(STATUS "${LOGPREFIX} Targeting x86-64-v4.") message(STATUS "${LOGPREFIX} Targeting x86-64-v4.")
elseif(${PREFIX}TARGET_X86_64_V3) elseif(${PREFIX}TARGET_X86_64_V3)
target_compile_options(${PROJECT_NAME} PRIVATE target_compile_options(${PROJECT_NAME} PRIVATE
"-march=x86-64-v3" "-march=x86-64-v3"
"-mtune=generic"
) )
message(STATUS "${LOGPREFIX} Targeting x86-64-v3.") message(STATUS "${LOGPREFIX} Targeting x86-64-v3.")
elseif(${PREFIX}TARGET_X86_64_V2_EX) elseif(${PREFIX}TARGET_X86_64_V2_EX)
target_compile_options(${PROJECT_NAME} PRIVATE target_compile_options(${PROJECT_NAME} PRIVATE
"-march=x86-64-v2" "-march=x86-64-v2"
"-mtune=generic"
"-mavx" "-mavx"
"-mbmi2" "-mbmi2"
"-mbmi" "-mbmi"
@ -2086,18 +2093,65 @@ elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL
elseif(${PREFIX}TARGET_X86_64_V2) elseif(${PREFIX}TARGET_X86_64_V2)
target_compile_options(${PROJECT_NAME} PRIVATE target_compile_options(${PROJECT_NAME} PRIVATE
"-march=x86-64-v2" "-march=x86-64-v2"
"-mtune=generic"
) )
message(STATUS "${LOGPREFIX} Targeting x86-64-v2.") message(STATUS "${LOGPREFIX} Targeting x86-64-v2.")
elseif(${PREFIX}TARGET_X86_64) elseif(${PREFIX}TARGET_X86_64)
target_compile_options(${PROJECT_NAME} PRIVATE target_compile_options(${PROJECT_NAME} PRIVATE
"-march=x86-64" "-march=x86-64"
"-mtune=generic"
) )
message(STATUS "${LOGPREFIX} Targeting x86-64.") message(STATUS "${LOGPREFIX} Targeting x86-64.")
endif() endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
target_compile_options(${PROJECT_NAME} PRIVATE
"-mtune=generic"
)
else()
target_compile_options(${PROJECT_NAME} PRIVATE
"-mtune=x86-64"
)
endif()
endif() endif()
# - Use fast unordered math if possible.
if(${PREFIX}ENABLE_FASTMATH)
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
target_compile_options(${PROJECT_NAME} PRIVATE
"-ffast-math"
)
else()
target_compile_options(${PROJECT_NAME} PRIVATE
"-ffp-model=fast"
"-ffp-contract=on"
)
endif()
else()
target_compile_options(${PROJECT_NAME} PRIVATE
"-ffp-model=precise"
"-ffp-contract=on"
)
endif()
# - Don't export by default, require attributes.
# add_compile_options("-fvisibility=hidden")
elseif(D_PLATFORM_MAC AND (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang"))
# AppleClang
message(STATUS "${LOGPREFIX} Applying custom flags for AppleClang style build.")
# - Enable most useful warnings.
target_compile_options(${PROJECT_NAME} PRIVATE "-Wall")
target_compile_options(${PROJECT_NAME} PRIVATE "-Wextra")
# - Require enabled instruction sets.
if(${PREFIX}TARGET_NATIVE)
target_compile_options(${PROJECT_NAME} PRIVATE
"-march=native"
)
message(WARNING "${LOGPREFIX} Targeting native architecture. Binaries will not be distributable to other systems!")
endif()
# - Use fast unordered math if possible.
# FIXME: Appears to not be supported.
# - Don't export by default, require attributes. # - Don't export by default, require attributes.
# add_compile_options("-fvisibility=hidden") # add_compile_options("-fvisibility=hidden")
endif() endif()